Fiber Optic Plates as Light Guides for Flat and Curved Scintillation Detectors

Kimberly J. Doty, Matthew A. Kupinski, R. Garrett Richards, Maria Ruiz-Gonzalez, Michael A. King, Phillip H Kuo, Lars R. Furenlid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

SPECT systems comprising arrays of modular scintillation cameras have long been recognized as an ideal approach for obtaining the dynamic data required for pharmacokinetic studies. As part of an effort to improve spatial resolution in scintillation detectors, we are investigating the use of fiber optic plates as a means to control the light spread in the light guide structure that transfers light from the scintillator exit surface to the light sensors. We have created a custom photon-transport code that handles the complexity of light propagation through fiber-optic cores as well as claddings to allow calculation of mean detector response functions (MDRFs) when combined with Monte Carlo simulations of gamma-ray interactions and lightsensor efficiency. We then invoke the Cramér-Rao Lower Bound derived from the Fisher-Information Matrix to estimate the intrinsic spatial resolution as a function of the optical design. We have simulated cameras with planar, cylindrically curved, and spherically curved scintillators and report on the efficacy of combining curved designs, which minimize parallax errors from pinhole projections, with fiber optic transfer plates that accomplish the transition from the curved scintillator to a planar array of light sensors. We assess the intrinsic 3D spatial resolution that can be achieved with maximum-likelihood (ML) estimation methods in these candidate modular camera designs, with the objective of arriving at a new version suitable for incorporation as the vertex camera in AdaptiSPECT-C, a project to develop a dedicated human brain imager.

Original languageEnglish (US)
Title of host publication2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665488723
DOIs
StatePublished - 2022
Event2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022 - Milano, Italy
Duration: Nov 5 2022Nov 12 2022

Publication series

Name2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference

Conference

Conference2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022
Country/TerritoryItaly
CityMilano
Period11/5/2211/12/22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiology Nuclear Medicine and imaging
  • Instrumentation
  • Nuclear and High Energy Physics

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